What Is Humic Acid? - Soil-BioticsThese organic acids are found in pre-historic deposits.  Over millions of years this cycle of organic matter is concentrated and  Leonardite is not a fertilizerHumic acids from leonardite: a soil conditioner and organicTitle: Humic acids from leonardite: a soil conditioner and organic fertilizer. Full Record; Other Related Research. Authors: Youngs, R.W.; Frost, C.M.. Publication 
EFFECTS OF LEONARDITE APPLICATIONS ON YIELD AND2009 crop seasons to determine the effects of leonardite (54.5% organic matter) on yield and quality of  containing fertilizers on plant yield and nutrient uptakeLeonardite - WikipediaLeonardite is a soft waxy, black or brown, shiny, vitreous mineraloid that is easily soluble in  Humic acids from leonardite – a soil conditioner and organic fertilizer. Ind. Eng. Chem., 55, 95–99; ^ Kalaitzidis, S; Papazisimou, S; Giannouli, A; Agriculture - Leonardite Products plant stress whether it is applies as a soil amendment of mixed with fertilizer.  Leonardite Products has not yet certified their products as organic, yet many of WHAT IS LEONARDITE? –The world trend of recent years in the fertilizer market shows that there is an active search for a replacement of organic fertilizers with organic fertilizers without Possible Use of Leonardite-Based Humate Sources as aNov 19, 2012 - Although it is well known that humates are potential types of organic fertilizer, enough information is not available on the properties of humic